<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/logo.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type='info' @click='logout'>退出</el-button>
    </el-header>

    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width=" isCollapse ? '64px' : '200px' ">
        <div class='toggle-button' @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" 
          unique-opened :collapse="isCollapse" :collapse-transition="false"
          :router="true" :default-active='activePath'>
          <!-- 一级菜单 -->
          <el-submenu :index="item.id+''" v-for="item in menuList" :key='item.id'>
            <template #title>
              <i :class=iconsObj[item.id]></i>
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for='subItem in item.children' :key='subItem.id'
              @click="saveNavState('/'+subItem.path)">
              <template #title>
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
        
          </el-submenu>
        
        </el-menu>
      </el-aside>
      <!-- 主体内容 -->
      <el-main><router-view></router-view></el-main>
    </el-container>
  </el-container>
</template>

<script>
  export default {
    data(){
      return {
        menuList:[],
        isCollapse:false,
        iconsObj:{
          '125':'iconfont icon-users',
          '103':'iconfont icon-tijikongjian',
          '101':'iconfont icon-shangpin',
          '102':'iconfont icon-danju',
          '145':'iconfont icon-baobiao',
        },
        activePath:''
      }
    },

    created(){
      this.getMeauList()
      this.activePath=window.sessionStorage.getItem('activePath')

    },

    methods: {
      logout() {
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      async getMeauList(){
        const {data:res} = await this.$http.get('menus')
        if(res.meta.status!==200) return this.$message.error(res.meta.msg)
        this.menuList=res.data
      },
      toggleCollapse(){
        this.isCollapse=!this.isCollapse

      },
      saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
      }
    },


  }
</script>

<style lang='less' scoped>
  .home-container {
    height: 100%;
  }

  .el-header {
    background-color: #373D41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;

    align-items: center;
    color: #fff;
    font-size: 20px;

    div {
      display: flex;
      align-items: center;

      span {
        margin-left: 15px;
      }

    }

    img {
      width: 60px;
      height: 60px;
      border-radius: 50%;
    }
  }

  .el-aside {
    background-color: #333744;
    .el-menu{
      border-right: none;
    }
  }

  .el-main {
    background-color: #eaedf1;
  }

  .iconfont{
    margin-right: 10px;
  }

  .toggle-button{
    background-color: #4a5064;
    color: #fff;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
</style>